In a vehicle traveling at 20 miles per hour, the force of your car impacting a surface is times as great as at 10 mph.

Answer

4

Explanation

The energy possessed by an object in motion is called kinetic energy.

Kinetic energy (K.E) = 1/2 mv²

Where m is the mass of the body and v is the velocity of the object.

For the vehicle traveling at 20 mph, its energy is;

K.E = 1/2×m×20² = 200m

For the vehicle moving at 10 mph, its energy is;

K.E = 1/2×m×10² = 50m

∴ 200m ÷ 50m = 4

It can be seen that the force of impact is 4 times greater.

I did not consider changing the units of velocity from mph to mps because am comparing the two energies. Even if I convert the velocities to mps, the answer would be same 4 times greater.

Answer

4

Explanation

The energy possessed by an object in motion is called kinetic energy.

Kinetic energy (K.E) = 1/2 mv²

Where m is the mass of the body and v is the velocity of the object.

For the vehicle traveling at 20 mph, its energy is;

K.E = 1/2×m×20² = 200m

For the vehicle moving at 10 mph, its energy is;

K.E = 1/2×m×10² = 50m

∴ 200m ÷ 50m = 4

It can be seen that the force of impact is 4 times greater.

I did not consider changing the units of velocity from mph to mps because am comparing the two energies. Even if I convert the velocities to mps, the answer would be same 4 times greater.

a and c

c is 100% but i am confused in a

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.